CVE-2026-5260
A flaw was found in libgnutls.
Published May 26, 2026 · updated Oct 14, 2026
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
Timeline
Detection, updates, and resolution for this record.
May 26, 2026 · NIST NVD
Detected
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
Oct 14, 2026 · NIST NVD
Updated
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
Oct 14, 2026 · NIST NVD
Updated
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
Sources
- CVE.orgCVE-2026-5260
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-5260
30-day exploitation probability 0.9%
first.org - NIST NVDCVE-2026-5260
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information
nvd.nist.gov